The aim of this study was to present a model of the effect of servant leadership style on organizational virtue and organizational maturity in open universities of Mazandaran province. This applied research was of exploratory (qualitative-quantitative) type. In the qualitative part, the statistical population included selected experts in the field of organization, management and ethics prior to the history of management and policy-making, who were purposefully appointed to 11 people according to the law of saturation. In the quantitative part of the statistical population, including all members of the faculty of Islamic Azad universities of Mazandaran province in 1399, which included (three areas of west, east and center of the province) were 1487 people, the sample size was determined 305 people based on Cochran's formula, and Samples were selected by cluster sampling. The method of data collection was library method and measurement tool in the qualitative part of the interview was semi-structured and in the quantitative part included a researcher-made questionnaire, whose questions were taken from the data obtained from the interview. The validity of the questionnaire was confirmed by relevant experts and the reliability coefficient was calculated using Cronbach's alpha test of 0.89%. Data analysis and analysis in the qualitative part of the Delphi technique and in the quantitative part of the structural equation modeling method using AMOS and Spss software. The results showed that 5 dimensions of organizational virtue were identified as priority (trust, empathy, spirit of sacrifice and forgiveness of optimism, and kindness and kindness, respectively). And the seven dimensions of servant leadership were identified in order of priority (partnership and teamwork, vision, service, compassion, empowerment, succession to leadership, and humility). The structural model of servant leadership style has a positive and significant effect on organizational virtue and organizational maturity in free universities of Mazandaran province.